Why are seedless vascular plants considered paraphyletic rather than monophyletic? a. some of the groups within the seedless vascular plants (equisetophyta and pteridophyta) are more closely related to each other than to other groups (lycophyta). b. they share a more recent common ancestor with seeded plants than they do with the non-vascular plants. c. all of the groups contained within the seedless vascular plants do not have the same ancestor. d. the group includes their common ancestor but also the seeded descendants of that same ancestor?

Fill in the blank 1. digestion occurs in the small intestine through the action of enzymes. 2. urea, excess water, and other waste materials are eliminated in a water fluid called 3. can cause infections by injecting dna or rna into hosts. 4. the human immune system produces in response to a vaccine, which later can bind to and destroy a pathogen if it invades. 5. are structures that link bone to bone at a joint 6. in the heart, blood flows from the right atrium to the right ventricle, where it is pumped to the the words i can use are: lymphocytes gliding pivot gas urine absorption dermis fulcrum lungs chemical viruses capillary vertebrae esophagus tendons antibodies synapses ligaments kidneys pathogens